Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 15000 ft (4600 m), or flight level 150. Original VAAC bulletin:
FVAU02 at 03:45 UTC, 17/10/26 from ADRM VA ADVISORY DTG: 20261017/0350Z VAAC: DARWIN VOLCANO: SEMERU 263300 PSN: S0806 E11255 AREA: INDONESIA SOURCE ELEV: 3657M AMSL ADVISORY NR: 2026/1187 INFO SOURCE: HIMAWARI-9, CVGHM ERUPTION DETAILS: VA TO FL150 OBS AT 17/0250Z MOV W EST VA DTG: 17/0330Z EST VA CLD: SFC/FL150 S0803 E11258 - S0808 E11259 - S0814 E11245 - S0804 E11242 MOV W 15KT FCST VA CLD +6 HR: 17/0930Z SFC/FL150 S0810 E11259 - S0831 E11208 - S0753 E11204 - S0801 E11258 FCST VA CLD +12 HR: 17/1530Z SFC/FL150 S0809 E11258 - S0827 E11206 - S0749 E11206 - S0802 E11258 FCST VA CLD +18 HR: 17/2130Z SFC/FL150 S0803 E11258 - S0810 E11258 - S0827 E11208 - S0751 E11205 RMK: DISCRETE VA EMISSIONS IDENTIFIABLE ON RECENT SATELLITE IMAGERY. REGULAR GROUND REPORTS ALSO INDICATE INTERMITTENT ERUPTIONS ARE ONGOING. HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY, GROUND REPORTS AND MODEL GUIDANCE. NXT ADVISORY: NO LATER THAN 20261017/0950Z=
Sporadic puff emissions were reported at Nevados de Chillán. Ash was not identifiable in satellite data, but light emissions were seen on webcam as of October 17, 2026, 01:20 UTC. Original VAAC bulletin:
FVAG01 at 01:10 UTC, 17/10/26 from SABM VA ADVISORY DTG: 20261017/0120Z
VAAC: BUENOS AIRES
VOLCANO: NEVADOS DE CHILLAN 357070 PSN: S3651 W07122
AREA: CHILE
SUMMIT ELEV: 10538 FT [3212 M]
ADVISORY NR: 2026/021
INFO SOURCE: GOES-E. GFS. WEBCAM.
AVIATION COLOUR CODE: NOT GIVEN
ERUPTION DETAILS: SPORADIC PUFF EMISSION
EST VA DTG: 17/0030Z
EST VA CLD: SFC/FL120 S3651 W07123 - S3710 W07107 - S3722 W07119 - S3711 W07134 - S3651 W07123 MOV S 10KT
Sheveluch (Kamchatka): (16 Oct) Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Tokyo warned of a volcanic ash plume rising to an estimated 14000 ft (4300 m), or flight level 140, and moving at 20 kts in NW direction. Original VAAC bulletin:ash plume to 14,000 ft (4,300 m) as of Oct 16, 05:20 UTC
Ibu (Halmahera, Indonesia): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 7000 ft (2100 m), or flight level 070. Original VAAC bulletin:ash plume to 7,000 ft (2,100 m) as of Oct 16, 18:40 UTC
Lewotolo (Lesser Sunda Islands): (16 Oct) Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 7000 ft (2100 m), or flight level 070. Original VAAC bulletin:ash plume to 7,000 ft (2,100 m) as of Oct 16, 07:09 UTC
Krakatau (Sunda Strait, Indonesia): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 4000 ft (1200 m), or flight level 040. Original VAAC bulletin:ash plume to 4,000 ft (1,200 m) as of Oct 16, 18:50 UTC
Semeru (East Java, Indonesia): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 14000 ft (4300 m), or flight level 140. Original VAAC bulletin:ash plume to 14,000 ft (4,300 m) as of Oct 16, 15:30 UTC
Marapi (Western Sumatra, Indonesia): An eruption was reported at Marapi at 15:27 UTC on 16 October. Ash cloud height was not observed; movement is estimated west at 10 knots, and dissipation is expected within 6 hours. Original VAAC bulletin:Marapi Volcanic Ash Advisory
Dukono (Halmahera): (16 Oct) Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 7000 ft (2100 m), or flight level 070. Original VAAC bulletin:ash plume to 7,000 ft (2,100 m) as of Oct 16, 04:50 UTC
White Island (New Zealand): (16 Oct) Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Wellington warned of a volcanic ash plume rising to an estimated 3000 ft (900 m), or flight level 030, and moving at 05 kts in N direction. Original VAAC bulletin:ash plume to 3,000 ft (900 m) as of Oct 16, 07:51 UTC
Santiaguito (Guatemala): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Washington warned of a volcanic ash plume rising to an estimated 14000 ft (4300 m), or flight level 140. Original VAAC bulletin:ash plume to 14,000 ft (4,300 m) as of Oct 16, 15:30 UTC
Fuego (Guatemala): Ongoing volcanic ash emissions have been reported at Fuego. Ash was not observed in satellite imagery due to heavy meteorological cloud cover, but continued emissions were seen on webcam as of October 16, 2026, 09:10 UTC. Forecasts indicate possible movement of ash to the southeast within 18 hours. Original VAAC bulletin:Fuego Volcanic Ash Advisory
Puracé (Colombia): Volcanic ash emissions were reported at Puracé. Ash was not detected in satellite imagery due to meteorological cloud cover. Forecasts indicate possible westward movement of ash up to FL180 through the next 18 hours. Original VAAC bulletin:Puracé Volcanic Ash Advisory
Reventador (Ecuador): Ongoing volcanic ash emissions are reported at Reventador. Ash was not detected by satellite due to weather clouds, but continued emissions are considered likely based on recent activity. Forecasts indicate no change in model winds at flight level for the next 18 hours. Original VAAC bulletin:Reventador Volcanic Ash Advisory
Nevados de Chillán (Central Chile): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Buenos Aires warned of a volcanic ash plume rising to an estimated 12000 ft (3700 m), or flight level 120. Original VAAC bulletin:ash plume to 12,000 ft (3,700 m) as of Oct 16, 12:30 UTC
An eruption was reported at Marapi at 15:27 UTC on 16 October. Ash cloud height was not observed; movement is estimated west at 10 knots, and dissipation is expected within 6 hours. Original VAAC bulletin:
FVAU04 at 16:07 UTC, 16/10/26 from ADRM VA ADVISORY DTG: 20261016/1607Z VAAC: DARWIN VOLCANO: MARAPI 261140 PSN: S0023 E10028 AREA: INDONESIA SOURCE ELEV: 2885M AMSL ADVISORY NR: 2026/86 INFO SOURCE: CVGHM, HIMAWARI-9 ERUPTION DETAILS: ERUPTION REPORTED AT 16/1527Z EST VA DTG: 16/1550Z EST VA CLD: SFC/FL110 S0027 E10033 - S0032 E09955 - S0014 E09955 - S0018 E10033 MOV W 10KT FCST VA CLD +6 HR: 16/2150Z NO VA EXP FCST VA CLD +12 HR: 17/0350Z NO VA EXP FCST VA CLD +18 HR: 17/0950Z NO VA EXP RMK: CVGHM VONA REPORTED ERUPTION AT 16/1527Z. VA NOT IDENTIFIABLE ON SATELLITE IMAGERY. VA EXPECTED TO DISSIPATE WITHIN 6 HOURS. HEIGHT AND MOVEMENT BASED ON RECENT ERUPTIVE BEHAVIOUR AND MODEL GUIDANCE. NXT ADVISORY: NO LATER THAN 20261016/2207Z=
Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 6000 ft (1800 m), or flight level 060. Original VAAC bulletin:
FVAU03 at 12:55 UTC, 16/10/26 from ADRM VA ADVISORY DTG: 20261016/1300Z VAAC: DARWIN VOLCANO: IBU 268030 PSN: N0129 E12738 AREA: INDONESIA SOURCE ELEV: 1325M AMSL ADVISORY NR: 2026/1175 INFO SOURCE: HIMAWARI-9, CVGHM ERUPTION DETAILS: VA TO FL060 REP FM GND AT 16/1144Z MOV W EST VA DTG: 16/1240Z EST VA CLD: SFC/FL060 N0124 E12740 - N0120 E12716 - N0136 E12708 - N0146 E12721 - N0134 E12742 MOV W 05KT FCST VA CLD +6 HR: 16/1840Z SFC/FL060 N0124 E12740 - N0123 E12715 - N0140 E12709 - N0148 E12724 - N0134 E12742 FCST VA CLD +12 HR: 17/0040Z SFC/FL060 N0124 E12740 - N0125 E12715 - N0148 E12713 - N0154 E12734 - N0134 E12742 FCST VA CLD +18 HR: 17/0640Z SFC/FL060 N0124 E12740 - N0125 E12715 - N0144 E12711 - N0154 E12728 - N0148 E12744 RMK: VA NOT IDENTIFIABLE ON SATELLITE IMAGERY DUE TO MET CLOUD. REGULAR GROUND REPORTS INDICATE INTERMITTENT ERUPTIONS ARE ONGOING. HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY, GROUND REPORTS AND MODEL GUIDANCE. NXT ADVISORY: NO LATER THAN 20261016/1900Z=
